QuestionVan:
About a year ago my wife took my truck to one of those lube places to have oil changed and transmission serviced. Shortly thereafter my transmission started leaking real bad I took it back and they showed me where one of the cooler lines had rubbed through against the exhaust pipe. They said there was no way it was their fault and even instructed me on how to repair with a rubber hose and 2 hose clamps. I quickly made the repair seeing how I used three quarts trans. fluid to go 10 miles.
Fast forward 8 months my repair came apart and we dumped all the tranny fluid. The hose looked like it was rotting. Anyway to get the truck back on the road I quickly put the hose back on, tightened the heck out of the clamps, and refilled with fluid. Fast forward to now the repair once again came apart. This time the hose relay looked bad but being stuck on the side of the road I once again reconnected & refilled with the intention of replacing it with compression couplings & tubing at my earliest conveyance (hose didn't look like it would last much longer). I hadn't driven more than 10 miles when I felt the tranny slipping I immediately pulled over thinking the line had popped. I looked and no fluid under truck I checked fluid level and it was a little over the hot mark. So I continued on my way home without further incident (I thought the slipping I felt was in my head) The next day on my way to buy the parts I needed. I got about 2 miles when tranny started slipping once again I got out and checked the hose & fluid, both were okay. Wasn't more than a mile before tranny was slipping and truck no go anymore. Had it towed home tranny fluid smells a little burnt. Took apart hose not much fluid poured out as it had in the past and was dark in color. After truck cooled tranny once again seems to work but I have not driven it to relay see yet. What I think happened is that a chunk of that rotting hose came apart and clogged the cooler or line. Would that cause the slipping & if it could what kind of permeant damage could it cause.
Sincerely,
Timothy J Pemberton
Ps Tranny only has 35,000 miles since dealership replaced with new one.
AnswerSlipping will wear out the discs, which means an overhaul.
Don't drive it at all slipping.
I would recommend draining the trans, replacing the filter, disconnect those lines from the trans and blowing the cooler out in both directions, and while the lines are off, crank the engine for just a few seconds to pump out as much as will come. Then install the pan, fill with fluid, and before connecting the lines, run the truck for a few seconds until the fluid comes out clean and new where the lines connect. Even if you waste a quart of fluid.
Then connect the lines, repairing the damaged one. Start it, and check level several times.
When it sits there after changing gears, etc, and is full, but not overfull, drive it easily around the block, and check again, several times, till you get the correct level.
If there is a piece of the hose in the system, it could cause a valve in the valve body to stick if it gets in there, but the one line comes from the torque converter to the cooler, and then dumps it back into the pan, so a filter should prevent it from getting to the valve body.
I honestly don't know if plugging one of those lines would cause slipping, but possible.
Good luck,
Van
